To answer your questions:
We checked in, went across to Debbie, made the tour appointment and changed the room right then. She yelled across to the girl who checked us in and told her what room she had given us and we then went back over and had her redo the key cards. I don't remember what letter it was but it was the largest and best 1 BR class.
I believe that all of the 1 BR units have the living room in front and the bedroom in back. We were in a unit that overlooked the tracks out the back, rather than the front of the rear building. but didn't find the occasional train to be a problem. The 2BR ones looked like one of the bedrooms faced the front and the other the rear.
The third floor units have a lofted ceiling in the living room and the windows in the upper portion weren't covered with drapes so if you are looking to use the hide-a-bed for sleeping it might be a bit of a problem. However since they face west it's not an early morning sun beating in. We're from the midwest so due to the two hour time difference and the fact that we are early risers we were having morning coffee in a pitch dark room watching the faint light spread over the water.
Bill